Enviro-Safe R22 Pro Seal XL4 Universal Sealant 12 Pack

Forms a hard seal on metal, Schrader valves, o'rings, gaskets, a/c condensers, evaporators, line sets and solder joints Repairs minor leaks in home, heat pump, large auto, and industrial applications One can will normally repair a leak in systems up from 1.5 to 5 ton If the a/c system will not hold a vacuum, you need to use the Enviro-Safe Prodry XL4 Eliminates moisture in the system, which can cause sulfuric acid and corrosion